Abstract

The cell wall of Brevibacterium sp. VKM Ac-2118 isolated from a frozen (mean annual temperature -12 degrees C) late Pliocene layer, 1.8-3 Myr, Kolyma lowland, Russia, contains mannitol teichoic acid with a previously unknown structure. This is 1,6-poly(mannitol phosphate) with the majority of the mannitol residues bearing side phosphate groups at O-4(3). The structure of the polymer was established by chemical methods, NMR spectroscopy, and MALDI-TOF mass spectrometry.

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